html, body, div, span, iframe, h1, h2, h3, h4, h5, h6,
p, a, abbr, address, code, map, area, del, em, img, strong,
sub, sup, tt, b, i, ol, ul, li, fieldset, form, label, legend,
table, caption, thead, tbody, tfoot, tr, th, td, article, aside,
canvas, embed, figure, figcaption, footer, header, nav, output,
section, time, mark, audio, video, input, textarea, select, button {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Microsoft Yahei", "Helvetica Neue", Arial, Helvetica, sans-serif;
}
//谷歌滚动条
::-webkit-scrollbar {
  width: 5px;
  height: 5px;
}
::-webkit-scrollbar-corner, ::-webkit-scrollbar-track {
  background-color: #e2e2e2;
}
::-webkit-scrollbar-thumb {
  border-radius: 5px;
  background-color: rgba(0,0,0,.3);
}
sup {
  vertical-align: text-top
}

sub {
  vertical-align: text-bottom
}

input, textarea, select, button {
  display: inline-block;
  font-family: inherit;
  font-size: inherit;
  font-weight: inherit;
  border: 1px solid #f5f5f5;
  outline: none;
  color: inherit;
}

label {
  display: inline-block;
}

button {
  cursor: pointer;
}

ul {
  list-style: none;
}

a, a:hover {
  text-decoration: none;
  outline: none;
  color: inherit;
}

img {
  border: none;
}

.fl {
  float: left;
}

.fr {
  float: right;
}

.cf {
  *zoom: 1;
}

.cf:before, .cf:after {
  content: '';
  display: table;
  clear: both;
  visibility: hidden;
}

.middle:before {
  content: '';
  display: inline-block;
  vertical-align: middle;
  height: 100%;
  width: 0;
}

.my-container {
  position: relative;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
}